HomeRoast Digest


Topic: problems with r.i.p. in Mazzer mini e (3 msgs / 89 lines)
1) From: =?iso-8859-1?Q?Claus_Th=F8gersen?=
Hi,
After a very long shipment, of course not a fault of SM but USPS, I received 
my Costa Rica R.I.P. coffee.
Of course it was one of the first beans to be roasted in my Hottop.
Today I wanted to start the day off with the R.I.P. coffee so I put the 
usual amount for my Bodum Santos in my Mazzer Mini E grinder.
And from here I got in trouble. The R.I.P. beans totally stalled the 
grinder. This can happen with the Mini E if you ajust the fineness of the 
grind while there are beans in the grinder and if the grinder is not 
running. But I have never seen beans causing this behavior.
When it happens I have to disassemple the grinder and get all the half 
grinded coffee out of the grinder. Usually I take of the hopper and the top 
bur, but I have been reluctant to take out the lower bur even though it 
makes cleaning a lot easier. Can I just take the lower bur of without 
risking to assemble the grinder in a wrong way afterwoods. Or does anybody 
here have a simple way to get the stuck coffee out of the Mini E when I only 
take off the top bur.
Luckily I have a spare grinder so i can get coffee, and this grinder has no 
problem grinding the R.I.P.
Claus
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2) From: Tom & Maria - Sweet Maria's Coffee
Very odd - the RIP coffee definitely takes longer to get drawn into 
the burrs, due to the large size of the coffee with the parchment on 
it. But I can't see why it would clog up the burrs and stall the 
mill. On my ditting ... well, on lots of mills, if you adjust finer 
with the motor off and coffee in the hopper, you will have a problem. 
But I am not sure why the RIP would do this while the mill was on. 
Let me know what you find when you look inside.
Tom
<Snip>
--
                   "Great coffee comes from tiny roasters"
            Sweet Maria's Home Coffee Roasting  -  Tom & Maria
                      http://www.sweetmarias.com                Thompson Owen george_at_sweetmarias.com
     Sweet Maria's Coffee - 1115 21st Street, Oakland, CA 94607 - USA
             phone/fax: 888 876 5917 - tom_at_sweetmarias.com
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3) From: raymanowen
The mazzers are direct drive Permanent Split Capacitor (PSC) motors.
If you inadvertently leave one of these running, even without a load, the
minimal cooling within the grinder casing will let the motor heat up. The
capacitor has no cooling and will get hot also. The heat will damage the
capacitor, and the reduced capacity will reduce the motor torque.
Maybe reduced capacity caused the motor to stall. Eventually, this can ruin
the motor if you keep running it in a near - stall condition with a possibly
bad capacitor.
It's pretty unlikely unless the motor hesitates randomly, but check the
grinder's internal wires for loose connectors and intermittent connections.
Absent any loose connections, save money and just replace the capacitor.
Match the voltage ratings, and get a "motor run capacitor," of equal or
greater capacitance. "Motor start capacitors" have greater capacity and
current carrying ratings, but their normal duty cycle is a second or less...
Cheers, Mabuhay, Magandang Hapon -RayO, aka Opa!
-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976
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